Question

If a ∈ N such that aN = {ax : x ∈ N}. Describe the set 2N ∪ 4N and 2N ∩ 4N.

Answer 1

Answer:

In triangle PQR, ∠R = ∠P , QR = 4 cm and PR = 5 cm. Then the length of PQ is

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